Fabrication of 3D-printed GNP/TiO₂/epoxy composites: an investigation on mechanical and photocatalytic properties

Abstract

Purpose

Three-dimensional (3D) printing is popular for many applications including the production of photocatalysts. This paper aims to focus on developing of 3D-printed photocatalyst-nano composite lattice structure. Digital light processing (DLP) 3D printing of photocatalyst composites was performed using photosensitive resin mixed with 0.5% Wt. of TiO₂ powder and varying amounts (0.025% Wt. to 0.2% Wt.) of graphene nanoplatelet powder. The photocatalytic efficiency of DLP 3D-printed photocatalyst TiO₂ composite was investigated, and the effects of nano graphite powder incorporation on the photocatalytic activity, thermal and mechanical properties were investigated.

Design/methodology/approach

Methods involve 3D computer-aided design modeling, printing parameters and comprehensive characterization techniques such as structural equation modeling, X-ray diffraction, thermogravimetric analysis, Fourier-transform infrared (FTIR) and mechanical testing.

Findings

Results highlight successful dispersion and characteristics of TiO₂ and graphene nanoplatelet (GNP) powders, intricate designs of 3D-printed lattice structures, and the influence of GNPs on thermal behavior and mechanical properties.

Originality/value

The study suggests applicability in wastewater treatment and environmental remediation, showcasing the adaptability of 3 D printing in designing effective photocatalysts. Future research should focus on practical applications and the long-term durability of these 3D-printed composites.

Graphical abstract

Citation

Güler, S., Yavaş, A., Özler, B. and Kilinç, A.Ç. (2024), "Fabrication of 3D-printed GNP/TiO₂/epoxy composites: an investigation on mechanical and photocatalytic properties", Rapid Prototyping Journal, Vol. 30 No. 5, pp. 1011-1022. https://doi.org/10.1108/RPJ-12-2023-0453